<template>
    <div>
        <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>权限管理</el-breadcrumb-item>
            <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>

        <!-- 添加角色按钮区域 -->
        <el-row>
            <el-col>
                <button type="primary" @click="addDialogVisible = true">添加角色</button>
            </el-col>
        </el-row>

        <!-- 角色列表区域 -->
        <el-table border stripe :data="roleList"> 
            <!-- 展开列 -->
            <el-table-column type="expand">
                <template slot-scope="scope">
                    <el-row :class="['bdbottom',i1===0?'bdtop':'']" v-for="(item1,i1) in scope.row.children" :key="item1.id">
                        <!-- 渲染一级权限 -->
                        <el-col :span="5">
                            <el-tag closable @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
                            <i class="el-icon-caret-right"></i>
                        </el-col>
                        <!-- 渲染二级三级权限 -->
                        <el-col :span="19">
                            <el-row :class="[i2===0?'':'bdtop']" v-for="(item2,i2) in item1.children" :key="item2.id">
                                <el-col :span="6">
                                    <el-tag type="success" closable @close="removeRightById(scope.row,item2.id)">{{item2.authName}}</el-tag>
                                    <i class="el-icon-caret-right"></i>
                                </el-col>

                                <el-col :span="18">
                                    <el-tag type="warning" closable @close="removeRightById(scope.row,item3.id)" v-for="(item3,i3) in item2.children" :key="item3.id">
                                        {{item3.authName}}
                                    </el-tag>
                                </el-col>
                            </el-row>
                        </el-col>
                    </el-row>
                </template>
            </el-table-column>
            <!-- 索引列 -->
            <el-table-column type="index"></el-table-column>
            <el-table-column label="角色名称" prop="roleName"></el-table-column>
            <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
            <el-table-column label="操作" width="300px">
                <template slot-scope="scope">
                    <el-button size = "mini" type="primary" icon="el-icon-edit" @click="showEditDialog(scope.row.id)">修改</el-button>
                    <el-button size = "mini" type="danger" icon="el-icon-delete">删除</el-button>
                    <el-button size = "mini" type="warning" icon="el-icon-setting" @click="showSetRightDialog(scope.row)">分配权限</el-button>
                </template>
            </el-table-column>
        </el-table>
        <!-- 添加用户对话框 -->
            <el-dialog
                title="添加用户"
                :visible.sync="addDialogVisible"
                width="50%" @close="addDialogClosed">
                <!-- 主体内容区域 -->
                    <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" 
                    label-width="70px">
                        <el-form-item label="角色名称" prop="username">
                            <el-input v-model="addForm.username"></el-input>
                        </el-form-item>
                        <el-form-item label="角色描述" prop="password">
                            <el-input v-model="addForm.password"></el-input>
                        </el-form-item>
                    </el-form>
                    <!-- 底部区域 -->
                <span slot="footer" class="dialog-footer">
                    <el-button @click="addDialogVisible = false">取 消</el-button>
                    <el-button type="primary" @click="addUser">确 定</el-button>
                </span>
            </el-dialog>
            <!-- 分配权限 -->
            <el-dialog
            title="分配权限"
            :visible.sync="setRightDialogVisible"
            width="50%" @close="setRightDialogClosed">
            <!-- 树形控件 -->
<el-tree :data="rightslist" :props="treeProps"
 show-checkbox node-key="id" default-expand-all
  :default-checked-keys="defKeys" ref="treeRef"></el-tree>
  <span slot="footer" class="dialog-footer">
    <el-button @click="setRightDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="allotRights">确 定</el-button>
  </span>
</el-dialog>
        <!-- 修改用户对话框 -->
            <el-dialog
                title="修改用户"
                :visible.sync="editDiialogVisible"
                width="50%" @close="editDialogClosed">
                <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
                    <el-form-item label="用户名">
                        <el-input v-model="editForm.username" disabled></el-input>
                    </el-form-item>
                    <el-form-item label="邮箱" prop="email" >
                        <el-input v-model="editForm.email"></el-input>
                    </el-form-item>
                    <el-form-item label="手机号" prop="mobile">
                        <el-input v-model="editForm.mobile"></el-input>
                    </el-form-item>
                </el-form>
                <span slot="footer" class="dialog-footer">
                <el-button @click="editDiialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
  </span>

</el-dialog>


    </el-card>
    </div>
</template>

<script>
export default {
    data(){
         //验证邮箱规则
        var checkEmail = (rule,value,cb)=>{
            //验证邮箱正则表达式
            const regEmail=/^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

            if(regEmail.test(value)){
                //合法邮箱
                return cb()
            }

            cb(new Error('请输入合法邮箱')) 
        }

        //验证手机号的规则
        var checkMobile = (rule,value,cb)=>{
            const checkMobile = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/

            if(checkMobile.test(value)){
                return cb()
            }

            cb(new Error('请输入合法手机号'))
        }
        return {
             //获取用户列表的参数对象
            queryInfo:{
                query:'',
                //当前的页数
                pagenum:1,
                //当前每页显示多少数据
                pagesize:2
            },
            userList:[],
            total:0,
            addDialogVisible:false,
            // 控制分配权限对话框的显示与隐藏
            setRightDialogVisible:false,
            // 所有权限的数据
            rightslist:[],
            // 树形控件树形绑定对象
            treeProps:{
                label:'authName',
                children:'children'
            },
            // 默认选中的节点ID值数组
            defKeys:[],
            // 当前即将分配权限的角色id
            roleId:'',
            //添加用户的表单数据
        addForm:{
            username:'',
            password:'',
            email:'',
            mobile:''
        },
        //添加表单的验证对象规则
        addFormRules:{
            username:[
                { required :true,message:'请输入用户名',trigger:'blur'},
                { min:3,max:10, message: '用户名长度在3——10个字符之间', trigger: 'blur'}
            ],
            password:[
                { required :true,message:'请输入密码',trigger:'blur'},
                { min :6 , max: 15,  message: '用户名长度在6——15个字符之间', trigger: 'blur'}
            ],
            email:[
                { required :true , message :'请输入邮箱' , trigger : 'blur'},{validator:checkEmail,trigger : 'blur'}
            ],
            mobile:[
                { required :true , message :'请输入手机' , trigger : 'blur'},{validator:checkMobile,trigger : 'blur'}
            ]
            },
            //所有角色列表数据
            roleList:[],
            //控制修改用户对话框的显示与隐藏
            editDiialogVisible:false,
            //查询到的用户信息对象
            editForm:{},
            //修改表单的验证规则对象
            editFormRules:{    
            email:[
                { required :true , message :'请输入邮箱' , trigger : 'blur'},{validator:checkEmail,trigger : 'blur'}
            ],
            mobile:[
                { required :true , message :'请输入手机' , trigger : 'blur'},{validator:checkMobile,trigger : 'blur'}
            ]
         }
        }
    },
    created(){
        this.getRolesList()
    },
    methods:{
        async getRolesList(){
            const {data:res} = await this.$http.get('roles')
            if(res.meta.status!==200){
                return this.$message.error('获取数据失败')
            }

            this.roleList = res.data
            console.log(this.roleList)
        },
        // 展示分配权限的对话框
        async showSetRightDialog(role){
            this.roleId=role.id
            const {data:res} = await this.$http.get('rights/tree')
            if(res.meta.status!==200){
                return this.$message.error('获取权限数据失败！')
            }
    // 把获取到的权限数据保存到data中
            this.rightslist = res.data
            console.log(this.rightslist)

            // 获取三级节点的id
            this.getLeafKeys(role,this.defKeys)

            this.setRightDialogVisible = true
        },
        // 通过递归的形式获取角色下所有的三级权限的id，并保存到defKeys数组中
        getLeafKeys(node,arr){
            // 如果当前node节点不包含children树形，则是三级节点
            if(!node.children){
                return arr.push(node.id)
            }
            node.children.forEach(item => this.getLeafKeys(item,arr))
        },
        // 监听对话框的关闭事件
        setRightDialogClosed(){
            this.defKeys=[]
        },
        // 点击为角色分配权限
        async allotRights(){
            const keys = [
                ...this.$refs.treeRef.getCheckedKeys(),
                ...this.$refs.treeRef.getHalfCheckedKeys()
            ]
            // console.log(keys)

            const idStr = keys.join(',')

            const{data:res} = await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr})
            if(res.meta.status!==200){
                return this.$message.error('分配权限失败')

            }
            this.$message.success('分配权限成功！')
            this.getRolesList()
            this.setRightDialogVisible=false
        },
        // 根据ID删除对应的权限
        async removeRightById(role,rightId){
           const confirmResult= await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=>err)
        if(confirmResult!=="confirm"){
            return this.$message.info('取消了删除')
        }

        // console.log('用户确认了删除')

        const{data:res} = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
        if(res.meta.status!==200){
            return this.$message.error('删除权限失败！')
        }
        // this.getRolesList()
        role.children = res.data
        },


        //展示编辑用户的对话框
        async showEditDialog(id){
            // console.log(id)
            const {data:res} = await this.$http.get('roles/'+id)
            if(res.meta.status!==200){
                return this.$message.error('查询用户信息失败')
            }

            this.editForm = res.data
            this.editDiialogVisible = true
        },
        //监听修改用户对话框的关闭事件
        editDialogClosed(){
            this.$refs.editFormRef.resetFields()
        },
        //  点击按钮添加新用户
        addUser(){
            this.$refs.addFormRef.validate( async valid=>{
                if(!valid) return
                //可以发起添加用户的网络请求
              const {data:res} = await this.$http.post('users',this.addForm)

              if(res.meta.status!== 201){
                  this.$message.error('用户添加失败')
              }
              this.$message.success('用户添加成功')
              //隐藏添加用户的对话框
              this.addDialogVisible=false
              //重新获取用户列表数据
              this.getUserList()
            })
        },
        //监听添加用户对话框的关闭事件
        addDialogClosed(){
            this.$refs.addFormRef.resetFields()
        },
        //修改用户信息并提交
        editUserInfo(){
            this.$refs.editFormRef.validate( async valid => {
                if(!valid) return
                //发起修改用户数据请求
                const{data:res} = await this.$http.put('users/'+this.editForm.id,{
                    email:this.editForm.email,
                    mobile:this.editForm.mobile
                })

                if(res.meta.status!==200){
                    return this.$message.error('用户信息更新失败')
                }

                //关闭对话框
                this.editDiialogVisible = false
                //刷新数据列表
                this.getUserList()
                //提示修改成功
                this.$message.success("更新用户信息成功!")
            })
        },
    }
}
</script>

<style lang='less' scoped>
.el-tag{
    margin: 7px;
}
.bdtop{
    border-bottom: 1px solid #eeeeee;
}
.bdbottom{
    border-bottom: 1px solid #eeeeee;
}
.vcenter{
    display: flex;
    align-items: center;
}
</style>